[TOOLS] Update filter: show download errors

.github/workflows/update-filters.yml

@@ -30,12 +30,12 @@ jobs:
         run: mkdir -p main/out/filters
 
       # -------------------------------
-      # Download filter lists (fail-safe)
+      # Download filter lists (fail-safe, detailed errors)
       # -------------------------------
       - name: Download filter lists
         run: |
           set -e
-          KO=0
+          FAILED=()
 
           while IFS= read -r line; do
             [ -z "$line" ] && continue
@@ -51,12 +51,16 @@ jobs:
 
             if ! curl -fL "$url" -o "main/out/filters/$file"; then
               echo "FAILED: $url"
-              KO=1
+              FAILED+=("$file")
             fi
           done < main/tools/images/update-cromite-org/filters-sources.txt
 
-          if [ "$KO" -ne 0 ]; then
+          if [ ${#FAILED[@]} -ne 0 ]; then
             echo "One or more downloads failed. Aborting deploy."
+            echo "Failed files:"
+            for f in "${FAILED[@]}"; do
+              echo "- $f"
+            done
             exit 1
           fi